Ignition Key Bypass To Kill Switch

[Section59]

I just bought a 2009 Ninja 250 for my 10 year old daughter to drag race with next year.

I've seen there is a few post o the ignition switch but non of them are quite doing what I am looking to do.

I would like to removing the ignition key and wiring it through the kill switch. Has anyone done this before, or know how to do it?

Also I'm guessing there is resistor in the key switch, what is it and on what wire is it?
Thanks in advance.
Leo

[InvisiBill]

https://woodcraft-cfm.com/products/k...rness-assembly warns it's only for US bikes, but it links to generic info about immobilizers, and the wiring diagram says it should be the same.

[DannoXYZ]

Here's how factory ignition-switch is wired.


Wiring-diagram of new-gen (I've fixed couple errors from manual).


And minimal kart-wiring diagram for putting Ninja engine into kart racer.


1. note ign-switch is triple-pole/single-throw with multiple inputs and outputs. One of which sends power to fusebox.

2. kill-switch is single-pole/single-throw with just one input and one output. Basically take power from fuse#3 and send it to ignition coils

3. in minimal kart-diagram, ignition-switch is retained and kill-switch tossed. Power goes directly from ignition-switch to ignition-coils without kill-switch in between. Ign-switch also turns on RR, powers ignitor and start-button.

4. If you remove ignition-switch, what turns on & off power to fusebox?

5. because kill-switch needs power from fusebox to turn on ignition-coils

6. ignitor and RR also needs power that's turned on & off through fusebox

7. clocks also needs power from fusebox

Requires lots of rewiring of harness after removing ignition switch. Basically every one of 7-wires that used to go to ignition-switch has to be re-connected somewhere else. And kill switch's already fully-connected with its 2 wires. It becomes paradox of chicken & egg. If you go back in time and kill your parents (remove ignition switch), how are you going to create yourself without them (power kill-switch)???

In end, I got that Woodcraft harness adapter InvisiBill linked to. Then removed ignition switch, kill-switch and start-button and replaced with just this.

[Section59]

Originally Posted by InvisiBill

https://woodcraft-cfm.com/products/k...rness-assembly warns it's only for US bikes, but it links to generic info about immobilizers, and the wiring diagram says it should be the same.

Thank you @InvisBill, This is what I'm looking to do! But, by the time i buy that and get it to the UK it will cost me the best part of $100 for it.

With the info ive now got (thankyou @DannoXYZ)this is the loom adapter im going to make. Plus likes for the connectors.

The loom is a nice easy one to make.

Switch Gear Connector
https://www.3waycomponents.co.uk/pro...way-black-kit/

Ignition Connector
https://www.3waycomponents.co.uk/pro...50-series-kit/

100 Ohm Resistor
https://www.ebay.co.uk/itm/134090799...3ABFBM_sbT0JZi

In total its going to cost less then £10 to produce myself.

[DannoXYZ]

That's awesome, thanks for adapter wiring! Will definitely come in handy for future!

[punishum808]

Originally Posted by Section59

I just bought a 2009 Ninja 250 for my 10 year old daughter to drag race with next year.

I've seen there is a few post o the ignition switch but non of them are quite doing what I am looking to do.

I would like to removing the ignition key and wiring it through the kill switch. Has anyone done this before, or know how to do it?

Also I'm guessing there is resistor in the key switch, what is it and on what wire is it?
Thanks in advance.
Leo

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Awesome, the US lags with developmental dragbike programs for youth like JR Ds have. Would like to see your build progress and your daughters progress as well.
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Hopefully she can be the next Angelle or Karen.
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I too am working on getting my PSM license. Good Luck
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